I finally got the itread studio stackable bluetooth card. It works right out of the box (or appears to, I haven't actually written code to make it do something). It connected right to the amarino app on the phone. I was a little nervous about plugging this into a mega arduino, since it doesn't have the same pinout as the basic arduino. Using the schematics for both the arduino and the shield, and dang, they line up. Being stackable, the pins are still usable (mostly).
I also ordered some blank prototype boards from itread studio. They are the mega sized ones, so I shouldn't loose anything. The board appears to have space to put one of the bluetooth boards, so I may be able to replace this shield with the prototype board. I should plan it out, and put things in eagle so that I can build a engine monitor shield. It only takes time.
I would like to get more folks coming to this site. I am looking for good ideas to get this promoted. It seems I am not spending enough time building to finish, so I don't feel strong about pushing things until I am done, in case I don't finish.
Feedback would be welcome.